Evaluation of a Paradigm to Investigate Detection of Road Hazards when Using a Bioptic Telescope

Bowers, Alex R.; Bronstad, P. Matthew; Spano, Lauren; Huq, Bidisha; Tang, Xiaolan; Doherty, Amy; Peli, Eli; Luo, Gang

doi:10.1097/opx.0000000000001230

Cited by 9 publications

(18 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Once participants were acclimated to the simulator, they completed 6 test drives, each about 10 minutes, on rural roads with light oncoming traffic. The six test drives included the three used in the prior study 27 with simulated vision impairment and an additional three developed for the current study using the same criteria.Three drives were undertaken with binocular viewing (fellow eye was open) and three drives with monocular viewing (fellow eye was patched). Binocular and monocular drives were interleaved with the order counterbalanced across subjects.…”

Section: Driving Simulator Proceduresmentioning

confidence: 99%

“…Details of the tasks are given elsewhere. 27 In brief, directional road signs were designed according to Standard Highway Signs in color, font, and text spacing (refer to the Manual of Uniform Traffic Control Devices http://mutcd.fhwa.dot.gov/ser-shs_millennium.htm). The custom navigation information on a road sign consisted of the road name ("Massachusetts Pike" or "Massachusetts Ave") and the distance ("0.8 Miles" or "0.3 Miles").…”

Section: Sign-reading and Hazard-detection Tasksmentioning

confidence: 99%

“…The pedestrian was programmed to appear approximately 1 second after the highway sign when the participant was expected to have already dipped their head to look into the bioptic. 27 The pedestrian appeared in an area of the lower visual field that would be within the ring scotoma when reading the sign through the bioptic ( Figure SP). It ran for about 1 s ahead of the participant's car and then disappeared before the sign-reading task was anticipated to be finished.…”

Section: Sign-reading and Hazard-detection Tasksmentioning

confidence: 99%

“…23 Recently we developed a more realistic driving simulator paradigm to investigate hazard detection when using a bioptic telescope. 27 The paradigm addressed some of the limitations of the earlier studies (such as prolonged viewing through the bioptic and lack of engagement in a driving task). Results of an initial study 27 using the new paradigm suggested that the fellow eye of normally-sighted observers with simulated visual acuity loss was largely able to compensate for the ring scotoma.…”

Section: Introductionmentioning

confidence: 99%

“…27 The paradigm addressed some of the limitations of the earlier studies (such as prolonged viewing through the bioptic and lack of engagement in a driving task). Results of an initial study 27 using the new paradigm suggested that the fellow eye of normally-sighted observers with simulated visual acuity loss was largely able to compensate for the ring scotoma. We now extend our investigation to visually-impaired bioptic users.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Hazard detection with monocular bioptic telescopes in a driving simulator

Tang

Bronstad

Spano

et al. 2018

Preprint

Self Cite

View full text Add to dashboard Cite

Purpose:Recently we developed a driving simulator paradigm to evaluate detection of road hazards when using a bioptic telescope and conducted an initial study using normally-sighted observers with simulated vision loss. We now extend our investigation to quantifying the extent to which visually impaired bioptic users are able to use their fellow (non-telescope) eye to compensate for the ring scotoma of a monocular bioptic telescope. We tested the hypothesis that detection rates would be higher in binocular viewing (fellow eye could potentially compensate) than monocular viewing (fellow eye patched so it could not compensate) for pedestrian hazards present in the scene only while the telescope was being used. Methods:Sixteen bioptic telescope users (17-80 y) completed six test drives, including three with binocular viewing interleaved between three with monocular viewing. While driving, they used their own monocular bioptic telescopes to read information on highway road signs (n = 71) and pressed the horn when they saw a pedestrian hazard (n = 50). Twenty-six of the pedestrians were programed to appear, run on the road ahead of the driver for 1s within the ring scotoma and then disappear, within the period when participants were reading signs through the bioptic. The timing of the head movement to look into and out of the bioptic was determined and events were then categorized by whether or not the pedestrian hazard was present in the scene only while using the bioptic. Results:When pedestrian hazards were in the scene only while subjects were using the bioptic to read a sign, detection rates were significantly higher in binocular than monocular viewing (68% vs. 40%).However, when pedestrians when subjects had a brief view of the pedestrian either beforeor after looking through the bioptic, then detection rates did not differ in binocular and monocular viewing (78% vs. 79%). By comparison, when not using the bioptic detection rates were higher (> 90%) and reaction times were shorter (without 0.95 s vs. with 1.25 s) Conclusions:Our results suggest that under binocular viewing conditions the fellow eye was able to compensate for the ring scotoma to a certain extent when subjects used a monocular telescope to read road signs; however, performance was not as good as without the bioptic.

show abstract

Section: Driving Simulator Proceduresmentioning

confidence: 99%

Section: Sign-reading and Hazard-detection Tasksmentioning

confidence: 99%

Section: Sign-reading and Hazard-detection Tasksmentioning

confidence: 99%